lib_alloc.c

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <stdint.h>
#include <string.h>
#include <time.h>

#include "lib_alloc.h"

int nb_alea(int max){

    int nb = rand() % max+1;
    
    return nb;
}

void fill_tab(int *tab, int size){
    
    for (int i = 0; i < size; i++)
    {
        //count += 1;
        tab[i] = rand() % size+1;
    }
}

void print_tab(int *tab, int size){
    
    for (int i = 0; i < size; i++)
    {
        int tmp = tab[i];

        printf("%d -- %d\n", i, tmp);
    }
}

void change(int *a, int *b){

    int tmp = *a;
    *a = *b;
    *b = tmp;

}

void permu_alea(int *tab, int size){

    for(int i = size -1; i> 0; i--){
        int j = rand() % (i+1);
        change(&tab[i], &tab[j]);
    }
    print_tab(tab, size);
}


void permu_cyclique(int *tab, int size, int deca){

    int32_t *tmp = malloc(size * sizeof(int32_t));

    for (int32_t i = 0; i < size; i++)
    {
        tmp[(i+deca)%size] = tab[i];
    }
    for (int32_t i = 0; i < size; i++)
    {
        tab[i] = tmp[i];
    }
    free(tmp);

    print_tab(tab, size);
}

void min_to_last(int *tab, int size){

    int i_min = 0;
    int min = tab[0];

    for(int i = 0; i < size; i++){

        if(tab[i]<min){
            
            tab[i] = min;
            i_min = i;
        }
    }

    int i_end = size-1;
    int val_end = tab[i_end];

    tab[i_end] = min;
    tab[i_min] = val_end;

    print_tab(tab, size);
}

void max_to_min(int *tab, int size){

    int tmp;

    for(int i = 1; i < size; i++){
        int j = i;
        while(j > 0 && tab[j-1] < tab[j]){
            tmp = tab[j];
            tab[j] = tab[j-1];
            tab[j-1] = tmp;

            j--;

        }
    }

    print_tab(tab, size);
}

void nb_count(int *tab, int size, int nb_counter){

    int count = 0;
    
    //on trie d'abord
    max_to_min(tab, size);

    for(int i = 0; i< size; i++){

        if(tab[i]<nb_counter){
            count += 1;
        }
    }

    printf("Il y a %d plus petit que %d", count, nb_counter);

}

void sum(int *tab, int *tab_two, int *tab_three, int size){

    for(int i = 0; i<size; i++){

        tab_three[i] = tab[i] + tab_two[i];
    }

    print_tab(tab_three, size);
}

void multi_element(int *tab_three, int *tab_four, int size, int n){

    for(int i = 0; i<size; i++){

        tab_four[i] = tab_three[i] * n ;

    }
    print_tab(tab_four, size);
}

void tab_double(int *tab_four, double *tab_five, int size){

    for(int i = 0; i< size; i++){

        tab_five[i] = (double)tab_four[i];

    }
     print_tab_double(tab_five, size);
}   

void print_tab_double(double *tab, int size){
    
    for (int i = 0; i < size; i++)
    {
        double tmp = tab[i];

        printf("%d -- %lf\n", i, tmp);
    }
}